Hi @Kelvin Kipkoech ,
Welcome to Q&A forum!
According to your description, it seems that you are encountering a SharePoint license issue. Please understand that the SharePoint server tag here focuses on general issues with SharePoint on-premise deployment. Regarding the license issue, I see that the vendor has given suggestions in the email. If you have any questions about the suggestions given by the vendor, we recommend that you communicate directly with the vendor, who will understand your situation and needs better than us and can better help you solve the problem.
Thanks for your understanding!
Good day!
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